Swtiched the DIMM slot for the RAM, same result.Removed DVD-ROM and HDD and booted the computer to the BIOS, same ~5+ minute screen.Was able to get into BIOS to reset to defaults.Removed Battery and A/C Plug and held Power down for 1 minute and reconnected via A/C Plug.Steps taken so far to resolve to long black screen: ( Source) and I have successfully installed Windows 7 Home Prem. Reset the BIOS to defaults and selected the DVD drive at boot #1 and HDD as #2 and attempted to place an obtained copy of Windows 7 Home Prem. Also, the laptop exhast fan is at 100% during this time. I get a solid black screen with a non-blinking Underscore in the upper-left corner during this time. Long (~5+ Minute) wait for even the "Acer" logo or the POST to show up.When prompted, click the Save button and choose the location where to save the file.After the download is complete, click Open to view the files.From the new window, locate and double-click the Setup application to start the installation of your driver.Click Yes to allow the program to make changes to your computer.Follow the instructions provided by the setup application.I have obtained an Acer Aspire 5250-BZ873 (Model #: P5WE6 from back label) from a friend to see if I couldn't get it working. This application will help you to identify the hardware in your computer.Follow the instructions below to find the appropriate driver.In your Internet browser, navigate to our Acer Drivers and Manuals page.Search for your system using the Serial Number, Product Model or the product list.Scroll down to view the Drivers tab.Select your Operating System.Locate the driver and click on the download link. If the device for which you require a driver is not named, you can download our Hardware Vendor Detection Utility. The vendor name will normally appear with the device installed. In the Device Manager window, locate the device for which you require the driver (in this example, a wireless network adapter). The following steps will show you how to choose the correct drivers for your computer.Windows Key + Pause/Break.Left click on Device Manager. Often, a particular device is made by several vendors each requiring a specific driver made by that vendor. On the Drivers and Downloads area of our support web site, there may be several drivers listed for the same device. When downloading or updating drivers, it is important to choose the correct driver that will work properly for the specific device in your computer. How do I download and install drivers for my computer? Downloading and Installing drivers for Acer products - Acer Community
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