A GUID missing? That's odd, I think the only choice is to reinstall Windows to be honest, as the power options program is missing.
Try this: Go to Device Manager. Expand System Devices. Right-click on the ACPI Fixed Feature Button and select Uninstall. In the "Confirm Device Uninstall" dialog box, click on OK. Restart the system. Windows should automatically detect and install Power Management on the computer
Agree with acrsn, run a 7 repair (upgrade) from the DVD. Might try running the system file checker before-hand, not sure if it will do any good. Also, switch to "Small icons" view in the Control panel and see if it does the same thing.
thanks everyone. anyway i just decided to buy a new hard drive and install everything from scratch. too sad, my vaio recovery dvds got corrupted. i miss the vaio windows log-on vaio theme, wallpapers, automatic activation stuffs, the free premium software that came with it... what i have is just plain old windows 7
Once you get a stable installation, make a system image. In fact, you'd be ahead of the game by having an initial stable image and another once you get everything installed and your system tweaked to suit you. An image sure does come in handy when a system faults. And oh yeah ... backup, backup, backup.
Why did you buy a new hard drive? All you needed to do was clean install Windows???? Lot of $$$$ for no reason.
When I went from XP to 7 on my netbook, I replaced the 160GB drive with a 320GB. The 160 was fine, but I took the opportunity to get a larger drive. Sometimes a problem will pop up and "allow" you the opportunity to do a few system improvements. Even considering the effects of all the flooding, hard drives are cheap. Back in the 20th century I bought a WD 450MB drive (yep...that's an "M") and it was over $400. Today's drives are cheap.