Manufacturer/Model HP-Pavilion m9280.uk-a CPU 2.30 gigahertz AMD Phenom 9600 Quad-Core Motherboard ASUSTek Computer INC. NARRA3 3.02 Memory 3582 Megabytes Usable Installed Memory (4 Gig) Graphics Card(s) ASUS NVIDIA Geforce GTS450 Sound Card Realtek High Definition 7.1 Audio (HP drivers) Monitor(s) Displays HP w2408 24.0' (Dual monitor) Screen Resolution 1920 * 1200, 1920 * 1200 Hard Drives 3*500 Gigabytes Usable Hard Drive Capacity Plus 2x USB (160Gig each) external HDD BluRay & DVD Weiters HL-DT-ST BD-RE GGW-H20L SCSI CdRom (Bluray RW) Device AlViDrv BDDVDROM SCSI CdRom (Blueray) Device TSSTcorp CDDVDW TS-H653N SCSI CdRom Internet Speed 40 Meg. This software applies to Vista (as you note in your post); however, the initial post and the System Specifications state the computer is using Windows 7. I'm not sure if this program will work on Windows 7 (or if it will cause more problems if it actually does install) though I could find nothing equivalent for that model of computer (or for Windows 7) except the following under Step 3:. Before starting, confirm that I have the correct computer - it would be best to start with the Service Tag number and search specific to your exact computer. That entire page is dedicated to battery issues with the 6400, so it's worth a look (you may need to update the BIOS or try some other options as well - just follow the instructions and make sure you use the correct versions for the computer and your operating system) but if you're going to try to update the Power management software, I recommend you use the version that appears to be most applicable to Windows 7. I must admit I had trouble finding any Windows 7 downloads for this computer model (assuming I have the right one) - and that may be the root of the problem - but if you use the Service Tag number, you may have more success as I could not be that specific in my search.

At some point, it recommends replacing the battery - though to be honest if this occurred at the exact same time you upgraded from XP to W7, I find it quite a coincidence the battery would decide to fail at that precise moment (but it is possible). I suspect instead that it is some type of compatibility problem with the battery or the adapter (or perhaps something else). Changing the software and BIOS may help and may in fact resolve the problem - they are certainly worth a try before buying a new battery or spending money to get it checked. I hope this helps. Manufacturer/Model Dell Inc. MP061 Inspiron E1705 CPU 2.00 gigahertz Intel Core 2 Duo 64 kilobyte primary memory Motherboard Board: Dell Inc. Manufacturer/Model HP-Pavilion m9280.uk-a CPU 2.30 gigahertz AMD Phenom 9600 Quad-Core Motherboard ASUSTek Computer INC.

NARRA3 3. Chemical Brothers Loops Fury Raritan. 02 Memory 3582 Megabytes Usable Installed Memory (4 Gig) Graphics Card(s) ASUS NVIDIA Geforce GTS450 Sound Card Realtek High Definition 7.1 Audio (HP drivers) Monitor(s) Displays HP w2408 24.0' (Dual monitor) Screen Resolution 1920 * 1200, 1920 * 1200 Hard Drives 3*500 Gigabytes Usable Hard Drive Capacity Plus 2x USB (160Gig each) external HDD BluRay & DVD Weiters HL-DT-ST BD-RE GGW-H20L SCSI CdRom (Bluray RW) Device AlViDrv BDDVDROM SCSI CdRom (Blueray) Device TSSTcorp CDDVDW TS-H653N SCSI CdRom Internet Speed 40 Meg. If you delve deeper into that link, you can determine if your computer is compatible with Windows 7. I checked the listing and did not find your model. Then I went to the page for the 6400 drivers and downloads and the option for Windows 7 was not available: = Did you verify your computer was compatible with Windows 7 before you upgraded?

I must admit I'm a bit perplexed that it has functioned for months with no other apparent problems if there is a compatibility issue - but maybe problems with the battery IS that issue (and maybe the only one). Manufacturer/Model Dell Inc. MP061 Inspiron E1705 CPU 2.00 gigahertz Intel Core 2 Duo 64 kilobyte primary memory Motherboard Board: Dell Inc.