I went to manual control on my memory and maxed it out at the lowest settings possible. Everything appears stable. However, games still appear to skip/jump in the video scenes... esp C&C Generals. What else does the bios do in turbo mode? I don't see how this could be a ram problem if at manual control and normal settings in bios it runs without crashing at the lowest settings. Does the bios turbo mode mess with the agp/ram/cpu bus speeds? What could the turbo option possibly do to make games run smooth with occasional lockups, and having turbo disabled very stable but jumps/lag in videos from games? Please help... How can I fix this? My 3.3V line is running at 3.15 but that seems sufficient to me. My hardware: Turbolink 420 psu Soyo Dragon K7V Plus (266) Crucial pc2100 Memory Amd 1800xp thoroughbred 80 gig 7200 rpm hdd I think the bios installed is 2BA5.. not sure on that one at the moment. CPU temp has been consistently around 45C

I notice you don't list a gfx card under hardware. Do you have a gfx card? What kind is it? Have you tryed running your games at lower resolutions and such. Sacrificing image quality is the best way to boost performance. I really doubt your ram timings will make enough of a difference to stop drastic video skipping. Setting it to "turbo" mode shouldn't mess with your cpu/fsb/agp/pci/mem clocks, just puts your memory at a lower latency. That is kind of low on your 3.3v line.

My graphics card is a gf4 ti 4200 from visiontek... has a 80mm fan with a zalman heatpipe on it. I'm going to watercooling in a few weeks to get rid of most of the fans. :)

If something was wrong with your hard drive you could get those symptoms..lagging ect. cause if for some reason the hd isn't sending the data continuously when the rest of the system needs it lags, hd lags picture lags too. same thing can happen with ram but a lot less likely.

The weird thing is that the computer runs smooth as silk... then.... sudden freeze 10-15 minutes into the game with turbo on in the bios... soyo combo menu. If I have it on normal... then the games jump but do not lockup. I have a fairly new Seagate 80 Gig drive

My C drive is 17% total fragmented.. with 34% file fragmentation. I recently tried the computer at 2.5 cas as crucial rates it and Dram command rate at 1T. Same results as on normal in bios. I also tried I tried to run the bios in turbo, but it locks the ram at cas 2. If I underclock the ram and put the bios in turbo it does not lock up. Just returns me to the windows desktop with a 'serious error' from c&c generals. I just wish I could pinpoint the problem because I could just replace that part or tweak the software just right.

Well to be honest i have no clue what's wrong with your pc, but if i was you i would atleast try formatting and reinstalling windows, if you haven't already. if that don't work it's almost certainly some hardware problem. like i said maybe the hd..is the hd light coming on when you have these problems? if so maybe it is the hard drive, could also be the m/b,v/c ram cpu. don't you hate pc's