Sorry for delay - I don't have an old keyboard :-( Have spoken to the technician who is thinking it's the RAM. Meanwhile my boyfriend thinks it's the power supply (he is overseas hence the need for Skype). Working on getting a new power supply.
Was able to get a process explorer log of when the windows low on resources warning came up - hope it helps.
Process CPU Private Bytes Working Set PID Description Company Name Verified Signer
System Idle Process 88.41 0 K 24 K 0
Interrupts 2.27 0 K 0 K n/a Hardware Interrupts and DPCs
Skype.exe 1.96 186,052 K 194,604 K 3884 Skype Skype Technologies S.A. (Verified) Skype Software Sarl
Wow-64.exe 1.60 1,253,656 K 1,265,840 K 7020 World of Warcraft Blizzard Entertainment (Verified) Blizzard Entertainment
WmiPrvSE.exe 1.42 8,360 K 14,364 K 2700 WMI Provider Host Microsoft Corporation (Verified) Microsoft Windows
procexp64.exe 1.26 32,780 K 57,736 K 1228 Sysinternals Process Explorer Sysinternals - www.sysinternals.com (Verified) Sysinternals
audiodg.exe 0.71 23,412 K 24,644 K 1048 Windows Audio Device Graph Isolation Microsoft Corporation (Verified) Microsoft Windows
svchost.exe 0.31 32,292 K 52,020 K 796 Host Process for Windows Services Microsoft Corporation (Verified) Microsoft Windows
System 0.29 2,412 K 111,596 K 4
CurseClient.exe 0.20 177,564 K 6,132 K 2512 Curse Client Curse (No signature was present in the subject) Curse
dwm.exe 0.20 32,424 K 61,496 K 3864 Desktop Window Manager Microsoft Corporation (Verified) Microsoft Windows
Battle.net.exe 0.18 140,332 K 155,540 K 5928 Battle.net desktop app Blizzard Entertainment (Verified) Blizzard Entertainment
chrome.exe 0.16 136,840 K 157,744 K 7844 Google Chrome Google Inc. (Verified) Google Inc
chrome.exe 0.15 103,976 K 151,804 K 2776 Google Chrome Google Inc. (Verified) Google Inc
netsession_win.exe 0.12 9,336 K 17,132 K 4036 Akamai NetSession Client Akamai Technologies, Inc. (Verified) Akamai Technologies
csrss.exe 0.12 3,592 K 10,692 K 596 Client Server Runtime Process Microsoft Corporation (Verified) Microsoft Windows
LCore.exe 0.12 32,772 K 46,968 K 3548 Logitech Gaming Framework Logitech Inc. (Verified) Logitech
Agent.exe 0.10 9,076 K 17,784 K 5988 Battle.net Update Agent Blizzard Entertainment (Verified) Blizzard Entertainment
AvastSvc.exe 0.08 81,996 K 40,604 K 1396 avast! Service AVAST Software (Verified) AVAST Software a.s.
chrome.exe 0.05 107,268 K 133,184 K 7420 Google Chrome Google Inc. (Verified) Google Inc
explorer.exe 0.04 37,692 K 61,676 K 3888 Windows Explorer Microsoft Corporation (Verified) Microsoft Windows
speedfan.exe 0.03 7,400 K 18,880 K 2416 Almico Software (www.almico.com) (Verified) SOKNO S.R.L.
AppleMobileDeviceService.exe 0.03 3,336 K 9,800 K 2028 MobileDeviceService Apple Inc. (Verified) Apple Inc.
svchost.exe 0.02 5,048 K 10,328 K 844 Host Process for Windows Services Microsoft Corporation (Verified) Microsoft Windows
LCDClock.exe 0.02 5,736 K 10,780 K 4888 Logitech LCD Clock/Performance Monitor Logitech Inc. (Verified) Logitech
chrome.exe 0.02 62,288 K 83,544 K 6264 Google Chrome Google Inc. (Verified) Google Inc
SRServer.exe 0.01 7,072 K 16,816 K 4028 Splashtop® Streamer Splashtop Inc. (Verified) Splashtop Inc.
avastui.exe 0.01 15,804 K 24,752 K 1184 avast! Antivirus AVAST Software (Verified) AVAST Software a.s.
chrome.exe 0.01 62,908 K 85,628 K 6772 Google Chrome Google Inc. (Verified) Google Inc
chrome.exe 0.01 22,160 K 46,640 K 7244 Google Chrome Google Inc. (Verified) Google Inc
LCDMedia.exe 0.01 8,020 K 10,348 K 4848 Logitech G-series Media Display Logitech Inc. (Verified) Logitech
iPodService.exe 0.01 2,516 K 6,844 K 4380 iPodService Module (64-bit) Apple Inc. (Verified) Apple Inc.
svchost.exe 0.01 18,736 K 19,848 K 1212 Host Process for Windows Services Microsoft Corporation (Verified) Microsoft Windows
lsass.exe < 0.01 8,028 K 16,276 K 720 Local Security Authority Process Microsoft Corporation (Verified) Microsoft Windows
chrome.exe < 0.01 32,908 K 54,352 K 2716 Google Chrome Google Inc. (Verified) Google Inc
TSMApplication.exe < 0.01 12,280 K 22,212 K 248 (No signature was present in the subject)
Dropbox.exe < 0.01 71,396 K 94,152 K 3764 Dropbox Dropbox, Inc. (Verified) Dropbox
svchost.exe < 0.01 32,500 K 31,172 K 316 Host Process for Windows Services Microsoft Corporation (Verified) Microsoft Windows
SearchIndexer.exe < 0.01 37,216 K 23,444 K 4504 Microsoft Windows Search Indexer Microsoft Corporation (Verified) Microsoft Windows
nusb3mon.exe < 0.01 1,896 K 5,892 K 1180 USB 3.0 Monitor Renesas Electronics Corporation (Verified) Renesas Electronics Corporation
SRFeature.exe < 0.01 6,944 K 15,292 K 3384 Splashtop® Streamer Feature Splashtop Inc. (Verified) Splashtop Inc.
WowBrowserProxy.exe < 0.01 8,792 K 12,256 K 4748 World of Warcraft: Browser Proxy Blizzard Entertainment (Verified) Blizzard Entertainment
svchost.exe < 0.01 13,148 K 20,912 K 600 Host Process for Windows Services Microsoft Corporation (Verified) Microsoft Windows
SSUService.exe < 0.01 2,732 K 6,100 K 1436 Splashtop Software Updater Service Splashtop Inc. (Verified) Splashtop Inc.
EvernoteClipper.exe < 0.01 1,944 K 6,424 K 4204 Evernote Clipper Evernote Corp., 305 Walnut Street, Redwood City, CA 94063 (Certificate expired) Evernote Corp., 305 Walnut Street, Redwood City, CA 94063
taskhost.exe < 0.01 13,528 K 14,416 K 3804 Host Process for Windows Tasks Microsoft Corporation (Verified) Microsoft Windows
chrome.exe < 0.01 124,380 K 159,332 K 608 Google Chrome Google Inc. (Verified) Google Inc
LCDPOP3.exe < 0.01 4,336 K 10,116 K 4944 Logitech G-series POP3 Monitor Logitech Inc. (Verified) Logitech
AAM Updates Notifier.exe < 0.01 7,088 K 560 K 2292 AAM Updates Notifier Application Adobe Systems Incorporated (Verified) Adobe Systems Incorporated
WLIDSVC.EXE < 0.01 7,364 K 14,840 K 2136 Microsoft® Windows Live ID Service Microsoft Corp. (Verified) Microsoft Corporation
BingDesktopUpdater.exe < 0.01 3,896 K 8,528 K 1528 Bing Desktop updating service Microsoft Corp. (Verified) Microsoft Corporation
csrss.exe < 0.01 2,304 K 4,768 K 520 Client Server Runtime Process Microsoft Corporation (Verified) Microsoft Windows
svchost.exe < 0.01 198,808 K 209,360 K 396 Host Process for Windows Services Microsoft Corporation (Verified) Microsoft Windows
iTunesHelper.exe < 0.01 4,164 K 12,400 K 292 iTunesHelper Apple Inc. (Verified) Apple Inc.
AvastVBoxSVC.exe < 0.01 7,796 K 15,632 K 2872 AvastVirtualBox Interface Avast Software (Verified) AVAST Software a.s.
SRService.exe < 0.01 4,032 K 10,280 K 1744 Splashtop® Streamer Service Splashtop Inc. (Verified) Splashtop Inc.
nvvsvc.exe < 0.01 5,620 K 13,904 K 1324 NVIDIA Driver Helper Service, Version 344.65 NVIDIA Corporation (Verified) NVIDIA Corporation
netsession_win.exe < 0.01 3,212 K 8,808 K 3588 Akamai NetSession Client Akamai Technologies, Inc. (Verified) Akamai Technologies
WLIDSVCM.EXE 1,504 K 3,488 K 2244 Microsoft® Windows Live ID Service Monitor Microsoft Corp. (Verified) Microsoft Corporation
winlogon.exe 3,312 K 7,664 K 652 Windows Logon Application Microsoft Corporation (Verified) Microsoft Windows
wininit.exe 1,880 K 4,828 K 612 Windows Start-Up Application Microsoft Corporation (Verified) Microsoft Windows
VSSVC.exe 2,248 K 6,888 K 4860 Microsoft® Volume Shadow Copy Service Microsoft Corporation (Verified) Microsoft Windows
unsecapp.exe 2,248 K 6,172 K 3760 Sink to receive asynchronous callbacks for WMI client application Microsoft Corporation (Verified) Microsoft Windows
svchost.exe 8,300 K 14,020 K 3168 Host Process for Windows Services Microsoft Corporation (Verified) Microsoft Windows
svchost.exe 13,200 K 17,124 K 5268 Host Process for Windows Services Microsoft Corporation (Verified) Microsoft Windows
svchost.exe 21,196 K 25,080 K 1680 Host Process for Windows Services Microsoft Corporation (Verified) Microsoft Windows
svchost.exe 5,632 K 9,296 K 984 Host Process for Windows Services Microsoft Corporation (Verified) Microsoft Windows
svchost.exe 1,864 K 5,284 K 4268 Host Process for Windows Services Microsoft Corporation (Verified) Microsoft Windows
svchost.exe 2,108 K 5,744 K 2064 Host Process for Windows Services Microsoft Corporation (Verified) Microsoft Windows
svchost.exe 3,044 K 6,116 K 2864 Host Process for Windows Services Microsoft Corporation (Verified) Microsoft Windows
svchost.exe 1,688 K 4,296 K 3064 Host Process for Windows Services Microsoft Corporation (Verified) Microsoft Windows
svchost.exe 2,916 K 6,064 K 1092 Host Process for Windows Services Microsoft Corporation (Verified) Microsoft Windows
spoolsv.exe 11,260 K 19,896 K 1644 Spooler SubSystem App Microsoft Corporation (Verified) Microsoft Windows
smss.exe 540 K 1,196 K 360 Windows Session Manager Microsoft Corporation (Verified) Microsoft Windows
services.exe 5,972 K 9,732 K 696 Services and Controller app Microsoft Corporation (Verified) Microsoft Windows
RAVCpl64.exe 9,664 K 11,680 K 3640 Realtek HD Audio Manager Realtek Semiconductor (Verified) Microsoft Windows Hardware Compatibility Publisher
procexp.exe 2,384 K 7,332 K 5168 Sysinternals Process Explorer Sysinternals - www.sysinternals.com (Verified) Microsoft Corporation
PresentationFontCache.exe 26,204 K 17,112 K 5164 PresentationFontCache.exe Microsoft Corporation (Verified) Microsoft Windows
nvxdsync.exe 9,460 K 21,484 K 1316 NVIDIA User Experience Driver Component NVIDIA Corporation (Verified) NVIDIA Corporation
nvvsvc.exe 3,124 K 7,888 K 916 NVIDIA Driver Helper Service, Version 344.65 NVIDIA Corporation (Verified) NVIDIA Corporation
nvSCPAPISvr.exe 2,612 K 5,824 K 940 Stereo Vision Control Panel API Server NVIDIA Corporation (Verified) NVIDIA Corporation
ngservice.exe 1,344 K 3,552 K 2360 avast! NG service AVAST Software (Verified) AVAST Software a.s.
mDNSResponder.exe 2,900 K 6,364 K 540 Bonjour Service Apple Inc. (Verified) Apple Inc.
lsm.exe 2,860 K 4,620 K 732 Local Session Manager Service Microsoft Corporation (Verified) Microsoft Windows
Locator.exe 924 K 2,232 K 1916 Rpc Locator Microsoft Corporation (Verified) Microsoft Windows
LCDRSS.exe 8,336 K 17,672 K 5040 Logitech G-series LCD RSS Logitech Inc. (Verified) Logitech
LCDCountdown.exe 5,740 K 10,424 K 4868 Logitech G-series LCD Countdown Timer Logitech Inc. (Verified) Logitech
iCloudServices.exe 12,756 K 27,076 K 5824 iCloud Apple Inc. (Verified) Apple Inc.
dllhost.exe 2,772 K 7,344 K 5868 COM Surrogate Microsoft Corporation (Verified) Microsoft Windows
conhost.exe 1,760 K 4,956 K 2264 Console Window Host Microsoft Corporation (Verified) Microsoft Windows
chrome.exe 57,028 K 80,972 K 6244 Google Chrome Google Inc. (Verified) Google Inc
chrome.exe 33,824 K 53,504 K 4712 Google Chrome Google Inc. (Verified) Google Inc
chrome.exe 34,768 K 54,272 K 1156 Google Chrome Google Inc. (Verified) Google Inc
chrome.exe 29,028 K 49,924 K 2040 Google Chrome Google Inc. (Verified) Google Inc
chrome.exe 26,616 K 48,104 K 2728 Google Chrome Google Inc. (Verified) Google Inc
chrome.exe 30,280 K 49,476 K 5580 Google Chrome Google Inc. (Verified) Google Inc
chrome.exe 26,744 K 47,992 K 5980 Google Chrome Google Inc. (Verified) Google Inc
chrome.exe 30,032 K 50,072 K 1004 Google Chrome Google Inc. (Verified) Google Inc
chrome.exe 42,624 K 66,816 K 6836 Google Chrome Google Inc. (Verified) Google Inc
chrome.exe 50,280 K 76,992 K 6992 Google Chrome Google Inc. (Verified) Google Inc
armsvc.exe 1,204 K 3,920 K 1776 Adobe Acrobat Update Service Adobe Systems Incorporated (Verified) Adobe Systems
APSDaemon.exe 4,492 K 13,140 K 4388 Apple Push Apple Inc. (Verified) Apple Inc.
ApplePhotoStreamsDownloader.exe 13,288 K 28,008 K 4288 iCloud Photos Downloader Apple Inc. (Verified) Apple Inc.
ApplePhotoStreams.exe 16,088 K 32,296 K 1816 iCloud Photos Apple Inc. (Verified) Apple Inc.
alg.exe 1,668 K 5,112 K 2108 Application Layer Gateway Service Microsoft Corporation (Verified) Microsoft Windows
Thanks for your persistent help - hopefully will be out of your hair soon.