Blue Screen O Doom

does it blue screen when u power up the pc or after the dell logo screen when does it do it if you get to the dell logo screen start tapping "F8" and if you get it to catch  you should hear a beep and when the advanced options menu comes up use the arrow keys your mouse wont work here and scroll to the option" last known good configuration that worked" or something like that and  hit the "enter key"see if your pc will work from there if not we might can get to and try checkdisk error correction repair from" safe mode" when the dell logo screen comes up start tapping the "F8" key and when the advanced options menu comes up use the arrow keys and scroll to "safe mode"  and hit the enter key a bunch of word lines will come up and then a window will come up that says you have entered safe mode do you wish to continue click yes and go to safe mode as your pcs name not administrator and when the desktop comes on go to and click start>my computer>right click local disk>properties>and then click the tools tab and under Error-checking click chec nowand then under check disk options check both of the boxs and then click the start tab a window will come up saying it couldnt access because its in use that it will do it next time u restart the pc click ok to restart and after the pc boots back up it will come up and start doing the checking list and such just let it do its thing it might take awhile to finish just let it do it might take an hour or more and that might get u back up and running if that doesnt do it well just have to try something else let us know if you get it back online