Help...w7 and i cant update or download!!!!

[baroniuk]

ok this is bugging the hell outta me, i recently returned from week holiday and when i turned on pc i cannot update or download from the the net.
I use windows 7 beta and never had a problem before now, i have now re-formatted hard drive re installed o/s 3 times, reset bios, changed installer to administrator, checked forums from microsoft for error help but no joy.
Basically when i try to download something it says 'file is corrupt' and when i try to update it always fails.
The problems when downloading seem to suggest a virus but i have run a full scan and none were found also on task manager if i try to stop a process it says 'access denied'
Pleas please can any one help me out here?

 

[baroniuk]

ty for response, tried the diagnostic and memtest and all was fine, also w7 says hard drive was 'healthy' but i think you could be right on it may be failung because everything else makes no sense at all to me!
I am so confused because I had not been on pc all week so i cannot see why the sudden refusal for it to obey admin commands.
Any other things i might try before getting new hard drive would be appreciated.

 

[baroniuk]

I have in my anger cleared everything in my search to the route of the problem i am back on all stock settings atm, battery removed, jumpers everything!
I am sure it is hard drive or software failure but i use pc everyday and find it so strange that i cannot do tasks that are everyday jobs as stated before, simple tasks. Can a failing hard drive really cause issues like this within software related issues?
By the way i cannot even upgrade bios as i cannot download from internet, how can a failing hard drive cause these problems i am intrigued to know.

 

[baroniuk]

Thanks for responses iI think i am just going to get a new hard drive as when i turned pc on just now two more files have corrupted this cant be software or even a virus so its a new hdd any recommendations or shall i go on an ordwe the WD caviar blue 640gb.