My son's laptop had a C: drive of 60Gb and a D: drive of 60Gb.  The D drive had almost nothing on it, like 40mb, so I ran Partition Wizard on it to change C to about 115Gb and D to 5Gb.  The D was labeled as "Data" from the FACTORY.  Anyway, Partiton Wizard looked like it was working great, the laptop went to reboot, and now there's nothing but a black screen with a cursor at the top left.   Anything I can do?  No, I don't have any discs for it.Quite frankly, you should complain to whoever told you to do this.
With any new computer, especially a laptop, do not change anything that was set by the factory until you know exactly what you're doing.
The factory settings are the right settings for the computer. They have years of experience in doing this sort of thing. Whoever told you to change things is a very irresponsible and uninformed individual.
You should contact the manufacturer of the computer and explains what you did. They may perhaps be so kind as to sell you a suitable recovery CD that will help restore your system. But there is no guarantee of that. In the instructions provided by the manufacturer they give you warnings about making changes to the system.I appreciate all the warnings, but that doesn't solve the problem. here's how to solve that problem..... at least the most simple way buy a COPY of vista or win 7 and format the drive adn restart, because to my knowledge that overwrote data on drive C: and now files needed for operation are missing/damaged. so sorry but the above posts are right whoever told you this didn't tell you what you were doing to yourselfThe first rule when running ANY drive level utility is to first create an image of the drive so you have somewhere to go in the event something goes wrong - but as you say, that doesn't help you now.

I don't know that you "overwrote" c: drive as the POST above suggests if all you did was extend c: drive, but not being there I can't be sure exactly what you did do. Regardless, one way or another you're going to need an OS CD to get to repair options at the very least or, as suggested above, to start from scratch and reinstall. Alternatively you can slave the drive just to see if your data is still there.cantfigureitout -

• at this time DO NOT do anything else to your HD.
• Purchase a copy of R-Studio (this is what I use), see www.r-tt.com.
• Purchase a USB external enclosure that will house the HD in the laptop
• remove the laptop HD, install in the USB enclosure, connect to another system
• On the other system install R-Studio
• Run the R-Studio scan (select the option to save the scan on the HD where R-Studio is install - DO NOT save to your son's drive) - This scan can take hours to days. My worst case was five days
• If R-Studio (OH BTW you will encounter a learning curve for R-Studio) finds stuff it will label it "recognized", double click on the "recognized item", now you have access to the data and can copy it to the system where R-Studio is install (NOT your son's laptop). Now you have access to your data
• Purchase a copy of Windows 7
• Reinstall the drive back in the laptop, boot off of the Win7 CD, install
• Network connect to the other PC and copy the desired data to the laptop
• Reinstall all of your applications (you need application CDs for this step
• Find a BIG stick and apply firmly and numerous times to the person that told you to run the Partition Wizard