Everytime I start my computer this comes up:

I tried both and for each option, the screen goes blank. I can't do anything. What can I do to fix this? Is this a virus or is something wrong with my computer? Thanks so much!

I have the exact same experience. I hope someone is reporting this as a possible virus. Based on the similar problem reports I have found on the web, it looks like this just came up.

ok. i tried rebooting my computer in "Last Known Good Configuration" and it worked. Right now, I'm scanning my computer. But is this enough? Do I need a specific program?

im having this same exact problem on my dell laptop. If anyone finds anything out on how to fix it please let me know.

I work in a PC repair store.

2 Computers came were brought in within 15 minutes of each other

Dell 4700
Dell 3000

Both have the error
lsass.exe - Application Error
"The instruction at "0x00401082" referenced memory at "0x00000000". The memory could not be "written".

I thought this was quite unusual, would like to know how to fix this if this is a new virus or worm, i see a few people have affected Dells, maybe its a dell thing?

My daughter has a Gateway Tablet and has the same problem. She finally got logged on using the "F8" last successful method, but a virus scan was negative. This really just seems to have popped up and it seems to be moving fast.

I'm having the same experience on a Dell laptop. I'm unable to reboot successfully using any of the options within F8. Has anyone found another solution?

Booting using the previous known good configuration did work.

I am doing a scan with AVG and have found a Vundo.CP trojan horse. I am not sure if this is causing the problem. I will let you know when everything is cleaned up.

How do you reboot with a previous known good configuration if the screen is black and the computer will not do anything?

Ok ...figured that out...and was able to boot up with last known good config...now scanning with AVP to see if it finds anything.