hey m8, as maniac said u need to update ur drivers, go to asus website
http://support.asus.com/faq/faq.aspx
select your motherboard model correctly and update the chipest driver, audio driver.
and here download the graphics driver
http://www.nvidia.com/object/winxp_175.19_whql.html this is if u have windows xp.
1 more thing, when u say it locks does the pc make any kind of noise? ticks or anything it could be something with the hard drive.
as for anti virus i tried everything and best ones are nod32 and kaspersky, other ones like norton or bitdefender slow ur pc down, Avast is ok aswel.
also try to defrag ur pc more often.
Ok Allen, but the thing is this, i dont see how it ONLY locks up Online, and ya my hard drive makes a thinking sound when it does, but as i said online my graphics are turned down, as on SINGLE player, my graphics are maxed out and it does not lag one little bit, so surely if it maybe was the HD it would skip more on single player?, Im not sure if roughters come into it, but i have a Thomson Speedtouch ST585 v6, so whether it maybe has somthing to do with the fact that that roughter was surplied by my isp which means its cheap, i dont know, its just damn annoying as my comp is very nice, but also it can not be the drivers as |MYT|Dutch does not have the problem i have, and we have identical computers apart from the graphics card, mine is not as good as Dutch, but the card i have is a Geforce 9600 GT Overclock and the reviews said it runs CoD4 at 70-80 FPS max settings, which it does single player with NO Lag or skips atall. and i defrag my comp once a week due to the fact i have half a terabite and i run Spyware Doctor Scans all the time, also it on all the time, and i use Firefox, and never in the last 2 weeks has my comp had a virus of any sort. But could u check or do u know, could it be my roughter, or anything from what i have said, and also, if it runs sweet on single player on max settings then it should online and less settings?
thanks mate =)