Help Pls!! Cd Breakdown??

[graffix]

Listen guys I have another problem. I keep getting error messages during intallation of anythinG: for example while installing a game (original CD in very good shape) there is an error saying: "Unable to install file whatever.cab)), installation has to be terminated". What's more I have the same problem while installing Windows!!! Probably a hardware breakdown?? I've tried 4 different CD(or DVD) drives, but to no avail ?? What else could have broken down ??
HELP PLS
Computer: Pentium 4 2.0GHZ
768 DDR
ATi Radeon 9700 PRO 128 MB DDR
Seagate Barracuda IV 60GB
DVD-LG
CD-RW-LG

 

[graffix]

Sorry for repeating the same thread... I thought I didn't send the last one

 

[doggard]

A bad memmory chip can cause this for XP or if you have bad sectors on the hard drive.

 

[graffix]

but i've been using the computer for quite some time now(2years) and the problem appeared recently after a serious system crash, after which Windows XP had to be re-installed.
I forgot to mention that i sometimes have the blue-screen errors during installation