after sleep hibernate computer stuck windows resum

Wondering if anybody else is having the same issue...
The computer goes to sleep/hibernation without any problems. However, when I try to resume from the sleep/hibernation, it gets stuck on the screen saying "Windows is resuming from sleep (or hibernation)..." and I have no other choice but restart. The only thing that I can do is move the mouse - no other key combination works.
Also, windows gets stuck on the screen when you try to shut it down. So, I have to restart it or turn it off the "hard way."
I am running a PC 3.2 GHz, 1.5 G of ram, 256 MBs Radeon 6600, 250 G of HD. The hardware has no problems.
I have consulted one of the "computer techs" that I know, and he says the issue might be with BIOS. He says that I should have tweaked with it before installing the Vista.
Any ideas how to go around to correct the problem?

Wondering if anybody else is having the same issue...
The computer goes to sleep/hibernation without any problems. However, when I try to resume from the sleep/hibernation, it gets stuck on the screen saying "Windows is resuming from sleep (or hibernation)..." and I have no other choice but restart. The only thing that I can do is move the mouse - no other key combination works.
Also, windows gets stuck on the screen when you try to shut it down. So, I have to restart it or turn it off the "hard way."
I am running a PC 3.2 GHz, 1.5 G of ram, 256 MBs Radeon 6600, 250 G of HD. The hardware has no problems.
I have consulted one of the "computer techs" that I know, and he says the issue might be with BIOS. He says that I should have tweaked with it before installing the Vista.
Any ideas how to go around to correct the problem?