Well, I can't actually determine which error is this so would you please provide a screenshot?
You may also try the following Solutions if it didn't work please provide a Screenshot.
1. Try updating your driver softwares (For example by Driver Booster)
Link for Driver booster : http://www.iobit.com/driver-booster.php
2. Click on Start Menu >> Search for "Run" then write 'msconfig'
it will be looking like that :
then Choose "Startup" tab and Un-check all the programs you don't need.
3. Download this defragger : " http://www.iobit.com/iobitsmartdefrag.php
" and use it once.
4. Restart Computer
5. Close Anti-virus software and firewall to prevent further proplems.
6. Use Gamebooster 3.4 Only
and try to configure it to close most possible programs.
Download Link : http://www.techspot.com/downloads.php?action=download_now&id=4842&evp=48f85d3c77f1ff93d2ef107f949e60eb&file=1
Please inform me back if the problem hasn't been fixed.