Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Black screen of death after IOLO defrag

17 May 2012   #1

Rhode Island
Black screen of death after IOLO defrag

Hello All,

My laptop (Dell Studio 1550, Windows 7 Home Premium 64 bit) just gave me the black screen upon start-up. The Iolo System Mechanic had defragged the registry, I think, and it seems that the process had damaged my laptop's registry.

I've ran sfc /scannow with no issues, but the memory diagnostic test froze. I am now running System Restore but it seems from prior threads that a clean re-install is necessary.

Would like to know if this is indeed the only solution, and if so, how do I go about re-installing without an installation CD (Dell never sent one, and I had bought the laptop abroad while I was in college).


My System SpecsSystem Spec
17 May 2012   #2
Microsoft MVP


System Restore is the most likely solution for black screen issues. Updating drivers is another one that works on occasion - but to do that you'll have to get into Windows. Can you boot into Safe Mode with Networking?
I'm also concerned about the memory test freezing. Please try these free diagnostcs: Initial Hardware Diagnostics

Beyond that there are many, many different things to try - but IME I've found that it's rare to actually fix it this way.
You can continue to search for suggested solutions as I did - but I eventually gave up and resorted to a wipe and reinstall (this is what I do at work).

If you don't have recovery disks then you should contact Dell for a set. There's info about that here (for those in the US): Order Recovery Discs (USA)
My System SpecsSystem Spec
17 May 2012   #3

Rhode Island

Thank you. I tried the Last Known Good Configuration and it worked. Have uninstalled System Mechanic. Still scared the problem might happen again when I restart my computer!
My System SpecsSystem Spec

17 May 2012   #4

Windows 7 Home Premium 64 Bit

Good news! Glad you uninstalled System Mechanic.

I recommend against 3rd party defrag tools. Windows has some nice command line flags for the defrag command that will accomplish the same tasks as 3rd party programs. The -b and -w flags will defrag boot files and the boot registry items as well as compact the data to the center of the disk for faster access.
defrag c: -b
defrag -c -v -w
The first command optimizes boot performance for the Windows drive by defragmenting boot files and boot registry items.

The second command includes all drives on the system through the -c command and optimizes the drives by compacting the data to the center of the disk. Verbose output through the -v option is optional to provide the user with more information about the defrag tasks. The commands have to be run in an Elevated Command Prompt

Using the above is far less risky than a 3rd party tool since the above was designed by Microsoft to work with Windows. Your registry is safer that way. :)
My System SpecsSystem Spec
17 May 2012   #5
Microsoft MVP


Update all of your drivers from the manufacturer's website (this includes software programs that use drivers also) - then ensure that you have all Windows Updates - then set another Restore Point (just in case).
My System SpecsSystem Spec

 Black screen of death after IOLO defrag

Thread Tools

Similar help and support threads
Thread Forum
Sony Vaio laptop Win 7 black screen of death.nothing on screen
hi guyz i last visited 3 years ago! the problem today i face is that my sony vaio laptop model nw29gf suddenly grew tired of me and is displaying nothing on screen when i start it up. there is literally nothing on screen not even dim backlight which could have been easily solved. alas i...
Hardware & Devices
Stuck on black screen of death, after blue screen of death
In need of serious help.* To begin, I am stupid and haven't backed up any of my files so for now a windows reinstall is out of the question. (unless it's completely necessary) okay, so the problem: I was using my computer as normal. Then while on Google Chrome, it started getting slow and said...
General Discussion
Black Screen of Death true black no keys work at all!!!HELP
i believe virus deleted a system 32 exe file it is a confident guess. I have a true black screen nothing at all comes up doesn't load anything no hot keys work. windows 7 hp laptop I need to know if I can get into bios if f keys don't work, cd repair disk don't work. what can I do power button and...
BSOD Help and Support
Black Screen of Death or Black Gaming Screen of Death
Hi My first time I had this BlackSOD problem was while playing BF3 , a few months ago, one day all good , next BlackSOD , the only way out, was a reboot , as keyboard and mouse where non- responsive. The only thing I had done was install an ATI 13.1 beta driver. I got rid of it and went for...
BSOD Help and Support
Black Screen of Death/Blue Screen of Death
Hello everyone. I have a Toshiba Satellite L450D-13X computer for the kids, and for the price it's a good laptop. Have had no issues with it until two weeks ago when the screen froze for the boys whilst playing a game and downloading a program from the net. Had to do a force shutdown and since...
BSOD Help and Support

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 20:47.
Twitter Facebook Google+