Whoa! Wait a second here!It was Windows that lost the driver in the first place. Very doubtful you can rollover, or reinstall the driver. Windows lost the address to the file. (Wind-Bl~ows)I would suggest you download, AND install the driver. If that doesn't work I will also show you how to disassemble your laptop.(I'm also assuming here that there is a yellow exclamation mark, next to the touchpad reference in Device Manager)I take it the reference is to an HP Pavilion dv6-3025dx Notebook PC.That's what the problem heading states. If it isn't get back here pronto, and state the Product Number. (Or I'll whine, and snivel, ....and you don't want to go there! lol!)( The Product Number is on the bottom of the laptop, in a white Service Tag. P/N = Product Number )Problem is the Operating System isn't stated.OS or O/S.
http://h10025.www1.hp.com/ewfrf/wc/softwareCategory?cc=us&dlc=en&lang=en&lc=en&product=4221625&In the drop down list I'm going to choose Windows 7, 32-bit, for an example,
http://h10025.www1.hp.com/ewfrf/wc/softwareCategory?os=4062&lc=en&cc=us&dlc=en&sw_lang=&product=4221625#N293The drivers are listed on down the page.Left-click on the + sign to the left of -Driver - Keyboard, Mouse, and Input Devices (3)Synaptics Touchpad DriverClick on the blue - More info, underneath this file name.On the next page look under the bold black heading -Details and specificationsClick on the blue - sp50594.exeA small window will come up on the right -Opening sp50594.exeClick on Save File.Going with you are using your HP computer, and it has Windows 7 (32-bit) on it.After you click on Save File another small window will come up. This time on the left. In the wording at the top of the window, tells you where the file will download to.It may have Desktop, or Documents, or Downloads, in the wording.Desktop: The driver file will be on your desktop screen.Documents: Click on the Windows logo button, then on Documents.(I know. Long way around, but users need to see the whole picture, sometimes)Downloads: Click on the Windows logo button, then on Documents.Now click on Downloads.When you see the file name (sp50594.exe), DOUBLE-click on it.In the next three small windows click on Next, Next, and Finish.If you are not asked to restart your laptop, do so.(Windows logo button, Turn Off Computer, Restart)No joy?Then the Touchpad is bad, or a bad connection.
http://h10025.www1.hp.com/ewfrf/wc/product?product=4221625&lc=en&cc=us&dlc=en&lang=en&cc=usAgain, main support page. This time left-click on the blue - Manuals - subheading.On this page click on the blue file name -HP Pavilion dv6 Entertainment PC - Maintenance and Service GuideIgnore if you are aware;The above is a PDF file. The computer you are using now has Adobe Reader on it, which uses PDF files. After you click on the above file name it may take up to 30 seconds, before the first page comes up.At the top of the PDF file is the PDF file page number box. To the right of the Down Arrow.IF you know the page you want you can use the Down Arrow, to go page by page to it, OR;1) Put your mouse cursor in the PDF page number box.Left-click once. (Everything in the page number box is highlighted in blue)2) Type the page number3) Press the Enter keyThe Zoom In icon ( + ) increases the page view size.The Zoom Out icon ( - ) decreases the page view size.You can also use the Bookmarks menu to the left.Go to Page 65.[Bookmarks menu > Click on the + sign to the left of - Removal and replacement proceduresClick on the + sign to the left of - Component replacement proceduresClick right on - Top cover ]Now,.....things you should have, and things you need to do F-I-R-S-T1) Remove ALL power. Remove the AC adapter (Charger) and Battery.2) You should buy, and wear an ESD wrist strap. Cost averages from $3 to $6. Keeps you from Static shocking the delicate hardware components, inside your laptop.Here is an example,
http://www.radioshack.com/product/index.jsp?productId=2103245Once the Top Cover is removed, there are sensitive items that can be Static shocked.{Hmmmm, I put everything back,....wonder why the laptop doesn't work? }3) Use a multi-compartment container for the various screws you will remove. Label each compartment for the area the screw/s come out of.SOME screws look VERY similar to other screws!Advise DO NOT mix them up.You have problems, or ANY questions regarding this, post back in a Comment.Regards,joecoolvette