I decided to upgrade from windows vista 64bit to windows 7 recently. I ran setup on boot from a windows 7 upgrade disk, deleted the partitions and installed. Everything seemed to run fine, until I tried opening my rar files. I keep getting file corrupt errors. It doesn't seem to be just my winrar either, I tried downloading the xp mode from the windows website and it was corrupt the first two attempts, and I tried downloading a photoshop trial and it was corrupt. It seems to be on and off, but mostly my files just seem to come out corrupt.
I've tried formatting and reinstalling three times, all seem to have the same results. I ran a memtest last night and it was fine this morning- im continuing to run it while at work just to make sure. Checkdisk comes out fine. Defrag doesn't seem to make a difference. I know I had trouble in vista running programs, so I've tried disabling UAC run as admin and that didn't make a difference. I tried reinstalling windows 7 while running windows 7 and got a message saying I needed to update the AFSPPIIS IDE Controller - could that have anything to do with this? Could it be my harddrive, is there any way to check? System repair says there's nothing wrong too.
I'm just really at a loss here.
I've done a couple searches and figured it might be worth making a thread of my own.