Almost every file I download is corrupted. I have to use my second computer on the same network to download my drivers to install.
At first I thought it was my Intel SSD, so I removed it and tried running on my spare harddisk. Didn't help.
Then I tried running memtest86+ v2 and no errors were reported. (I'm downloading Ubuntu now using my second computer to run an updated version of memtest)
I've ran chkdsk /F on the harddisk and no errors were found. On my SSD, I did a secure wipe and some tests using Intel's SSD tools and no errors were found.
My Chrome browser keeps crashing, so I thought it could be my graphics card since Chrome uses hardware acceleration right? So I bought a new graphics card and still there are errors.
I manged to get my MMO installed and I don't seem to have any problems running it.
So my final guess is either my CPU or motherboard is dying.
Are there any other tests I can do to find out the problem?
Update: The computer with the problem is connected to my router using an ethernet cable, I just changed this cable a few months ago.
I shared the folder with the downloaded drivers on my second computer using Windows 7's homegroup, and installed it from there so I think the network is working fine.
Update 2: When I downloaded my graphics drivers and tried to install them, it says something about the file being corrupted, and I need to download again. It happened for my graphics drivers, a game patch, chrome installation file, and maybe the windows update files because I got a blue screen during the windows update. Something about the ntfs.sys file.
When I reboot, I couldn't boot into the OS because of a BSOD with the error "Page fault in non paged area". I had to go into repair mode and do a system restore before everything went back to normal.
Update 3: I ran Memtest86+ v4.2 for 8 hours, 4 passes, 0 errors.
Update 4: I ran OCCT, CPU:OCCT test and it reported an "error on Core #3". I disabled it in BIOS and ran the test again, this time it just says "error detected". I suppose my CPU's causing the corruption problems.