Lenovo IdeaCentre - Recent Questions, Troubleshooting & Support - Page 3

PAM INVEST IN A NEW VIDEOCARD.

Maybe the power supply need to be more powerful.

the power supply is broken need a replacement as there is not enough power to run the machine

Which game you want to play, have you checked that latest drivers for your graphics card is intalled and sound card is working.

To turn off the power save mode, from the 'start menu' type "Power Options" in the search box and press enter. This will bring up the "select a power plan" menu. From here, select "High Performance". The sleep functions should be turned of by default, but you can select the "change plan settings" link and make sure both entries for "put your computer to sleep" are set to "never" in the drop down list and if you change it select "save changes" and you can exit.

http://download.lenovo.com/UserFiles/UserGuide/en/User%27s%20guides%20and%20manuals/B300&B305/Lenovo%20IdeaCentre%20B3%20Series%20Hardware%20Replacement%20Guide.pdf

This isn't you exact model of computer but I believe it has the same access points. The guy who made this video did a decent enough job to show you what screws to remove.http://www.youtube.com/watch?v=R9nUUZ_B4agI hope this helps you out.

You might Need a new Keyboard or Power Supply

It might be hidden behind the case. Remove the drive, then you should see a small hole that you can stick a paper clip in.

http://support.lenovo.com/en_US/research/hints-or-tips/detail.page?DocID=HT072986, this is a direct link to Lenovo's website, I put in the information about your system and the audio driver came up at the top, just download, install and reboot, just remember to make sure that the driver is the right one for your operating sysrtem, I'm assuming that you've got Windows Vista installed as that's the default for your PC, so hopefully the first loink should be the one you need :D

VIRUS : ScreenJacker more likely .Plug into another monitor using a VGA to VGA cable , boot up and try to run MALWAREBYTES before the virus kills the keyboard and mouse too .Good luck......................P.s. Try RKill too , if you can find it .

Check Connections, RAM and Power supply. You don't say if the fans are running or if any lights are on in the tower, so I can't be more specific.