I have a Toshiba Portege M400. The problem is that when I go near the fron microphones I get a loud and wining feedback noise. Have you had this problem before? It seems strange. Can you help?

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Go to the Toshiba Mobile support web site for you exact model. Select Drivers download. Select Windows 7 32bits or 64 bit and download the latest versions of all that relate to the Tablet module, and that includes the Wacom driver.

If you Windows is genuine you can uninstall all the Wacom drivers then execute the Check new hardware wizard ( of Hardware changes) or even Windows Update

Sounds like there might be dust inside of the laptop that is blocking one of the air vents. Plus the connectors to the screen may need to be reseated so that way the screen can be moved freely without it locking up on you and cutting off.
You have two issues going on. Bring it to somebody so they can open it up and make sure the air vents are cleaned out. Also they need to make sure the CPU fan is running properly. Then with the screen the connectors need to be reseated. Its also quite possible the screen connector might need to be replaced.
If the laptop is under warranty see if Toshiba will reapir it.

this should be what you need
http://www.csd.toshiba.com/cgi-bin/tais/support/jsp/modelContent.jsp?ct=DL&os=&category=&moid=1362642&rpn=PPM40U&modelFilter=M400-S4031&selCategory=2756709&selFamily=1073768662

Have you tried changing the boot order in bios? press the F8 key (usually) when you boot up. Set to boot fron CD. Then reinstall operating system

dear zy_martinez, get in to the Bios setting and look for SATA setting and disable it, now try to install again.

take a closer look left or right side of ur laptop u may find it there

Open your system bios setup. Then under the boot options make sure your cd drive is one of the drives enabled in the boot path. Hope this helps & please remember to rate my answer. Thanks.

I have the M400 and it also does this. I don't know much about computers, but I found out when you apply a little pressure to the left of the touchpad and beneath the keyboard as you're flipping on the power slider, it boots up much more often. I know... sounds crazy and stupid, but it works for mine and it's been doing it for almost a whole year now. It doesn't work everytime, but whenever the light flashes and the fan cranks up to a million RPM i just pull the battery out