It is a desktop and it is custom build.
Unfortunately this does not tell us anything, we need the motherboard brand and model details, whether you are using an add on video card and if so the brand and model details and the same for the PSU (power supply unit)
Can you also do the following for us;
Go to Start then to Run/Search
Type in compmgmt.msc and click Enter
On left side click on Disk Management
On right side you will see your hard drive.
Now I need you to take a screenshot and attach it to your next reply. Do the following to take a screenshot while the above is open and showing on your desktop.
To capture and post a screenshot;
Click on the ALT key + PRT SCR key..its on the top row..right hand side..now click on start...all programs...accessories...paint....left click in the white area ...press CTRL + V...click on file...click on save...save it to your desktop...name it something related to the screen your capturing... BE SURE TO SAVE IT AS A .JPG ...otherwise it may be to big to upload... then after typing in any response you have... click on browse...desktop...find the screenshot..select it and click on the upload button...then on the lower left...after it says upload successful...click on add reply like you normally would.