i have an Acer Aspire 9920g, there allegedly 'top of the range' model.' It's running on Windows Vista Ultimate, but even with 4gb of RAM, it's still slow.
The main problem however, is when i try to play a game, in particular STALKER Clear Sky. I can install the game, but when i try to play it, it comes up with a warning 'please insert original disc' even though the original disc is already inserted!
I've exchanged the game 3 times now and also sent my laptop back for a 'repair' which im not sure they did cause im still getting the same warning!
I have a pc aswell, which is only a basic pc, running on XP and that loads the game ok, even though playing it is a bit useless cause the pc's not man enough.
I have no idea what to do now, any help would be greatly appreciated,
many thanks
danny.I'm not sure (still looking) but, according to Mr. Jesse HERE, the game should work on Vista.

Is this a recent problem or has it been a problem ever since you got the computer?

Also, what is the exact message/error message? (if that isn't all it says)thats the exact message as far as i can remember, i wont be ABLE to check till later on today.
according to everything ive looked at, the game should play fine.
i had a problems with almost every game ive tried, the first stalker kept crashing, and some of the other games just wouldnt play, even though i met the minimum system requirements. i just put it down to they were for xp and im on vista>Quick question, is this the real version of Vista and not a copy?yeah, its the real version, its Vista Ultimate. At least i hope it's the real version, it came with the laptop the exact warning it comes up with is :-

'Please insert original DVD of "S.T.A.L.K.E.R.: Clear Sky"!

doesnt have any numbers or error codes or nothing, its a very helpful warning!!!!Try patching the game to install the latest updates:
http://stalker.deepsilver.com/patches.php?lang=engi tried the patches last night, wasnt sure if i needed all of them or just the latest 1, v1.5.05, so just did em all, but it still isnt working!! if you want, il video myself taking a sledge hammer to the laptop screen and post it on youtube for everyone to see!
thanks for helping by the way, very greatly appreciated
Check either Acer's website or the individual component manufacturer's websites for updated drivers. An easier, but less likely to work, solution would be to run Windows Update and look for updated WHQL certified drivers for your CHIPSET, video card, etc..

Faulty drivers are the first thing I would suspect. Follow that up with Windows Update patches for Vista. Check, DOUBLE check, and triple check Acer's website for new troubleshooting information on your laptop.

As for the "Insert Original Disc" error, if the game is protected with StarForce, make sure the helper service is still running (check services.msc).whats starforce and how do i check the helper service thing (and what is it, never heard of it )
i keep looking for driver updates, but as far as i know, my computers upto date!
thank you for your help tech.kyle, much appreciated