Computer freezes while playing games

been a while since i post, hopefully you get to read this, my PC doesnt want to install SP3 for some odd reason but idk if that would even fix my problem anyway, it just doesnt make sense, my PC has been running fine ever since i last reformatted, and now its starting to do all the same things again, bluescreens lock ups etc, could my harddrive be bad? or do you have any clue i know ive asked this quiet a bit but im runnin gout of ideas and i dont really want to order a vid card if thats nto the problem but here are my 5 recent minidumps.

Hopefully we'll know what the problem is from these or at least a clue

Also i think the problem is getting worse, it bluescreened me on windows startup now. Another thing itryed to reformat my PC but it will go to where it loads the files before you delete the partition but it says \i386\ntkrdmp.exe could not be loaded. The error code is 768, i have no idea what this is means this is first time i saw it and thats got me thinking that my harddrive has gone bad.

Five different minidumps with five different error codes and four different probable causes:

0x8E - Pool Corruption

0xFE - usbohci.sys

0xA - i8042prt.sys

0x50 - hardware

0xD1 - i8042prt.sys

Refressh my memory: Did we have you run memtest on your RAM? If so, for how many passes?

umm nope we didnt, im not sure if im going to be able to if i cant get this program burned onto a disc so i can check it and i have no floppy drive, theres no other way i can check? but im gonna try and burn the program to a disc an see if i can get it goin

im just gonna do something differant, i'll try 1 stick of each ram an see if i get the bluescreens an stuff still because i cant get this thing to burn so i'll try 1 stick of ram invidually an see if it bluescreens me.

Also, what is the make of your harddrive?

western digital