Do you have a restore point before these issues started;
Open System Restore by clicking the Start button , clicking All Programs, clicking Accessories, clicking System Tools, and then clicking System Restore. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
"What it does"
System Restore uses restore points to return your system files and settings to an earlier point in time, without affecting personal files. For more information.
Another option is uninstalling the updates that installed previous to the issue/s starting and then manually reinstall them one at a time and see if you can identify a particular update causing the issue/s.
If you suspect your system may have a malware issue I suggest you check out the self help guide at the malware forum http://www.geekstogo...cleaning-guide/
if after following the guide you believe your system may still be infected you need to start a new topic there and not post any malware logs on this forum as they are not used here, provide them with a link to this thread to show them what if any steps have been taken.
Once you get the all clear from the malware guys if the issue is not resolved return here and someone will assist you.
If after doing all of the above you are still having the same issue/s I would return the computer and have it sorted by the supplier to prevent voiding your warranty.