![Used Dell OptiPlex Windows 7 Pro Desktop Computer Tower Intel Core 2 Duo 2.13GHz 8GB RAM 1TB Hard Drive DVD Wifi with a 19" LCD - Walmart.com Used Dell OptiPlex Windows 7 Pro Desktop Computer Tower Intel Core 2 Duo 2.13GHz 8GB RAM 1TB Hard Drive DVD Wifi with a 19" LCD - Walmart.com](https://i5.walmartimages.com/seo/Used-Dell-OptiPlex-Windows-7-Pro-Desktop-Computer-Tower-Intel-Core-2-Duo-2-13GHz-8GB-RAM-1TB-Hard-Drive-DVD-Wifi-with-a-19-LCD_efb9e0d2-5760-446f-804b-00fda2fd3811.9130f4d9f6ee8377077f7e9df066b43c.jpeg)
Used Dell OptiPlex Windows 7 Pro Desktop Computer Tower Intel Core 2 Duo 2.13GHz 8GB RAM 1TB Hard Drive DVD Wifi with a 19" LCD - Walmart.com
I bought a PC with 8 GB RAM. I installed Windows 7 in it, and now its showing that only 3.9 GB of RAM are usable? What about the remaining RAM? Is
![Amazon.com: Microsoft Surface Pro 7 Quad-Core i5-1035G4 256GB 8GB RAM Wi-Fi Windows 10 Pro (Platinum, Newest Version) Amazon.com: Microsoft Surface Pro 7 Quad-Core i5-1035G4 256GB 8GB RAM Wi-Fi Windows 10 Pro (Platinum, Newest Version)](https://m.media-amazon.com/images/I/61tpvtbEgML.jpg)
Amazon.com: Microsoft Surface Pro 7 Quad-Core i5-1035G4 256GB 8GB RAM Wi-Fi Windows 10 Pro (Platinum, Newest Version)
![Amazon.com: Lenovo 2018 ThinkPad X1 Carbon (5th Gen) - Windows 7 Pro - Intel Core i7-7600U, 1TB SSD, 8GB RAM, 14" WQHD IPS (2560x1440) Display, Fingerprint Reader, (Classic Black) : Electronics Amazon.com: Lenovo 2018 ThinkPad X1 Carbon (5th Gen) - Windows 7 Pro - Intel Core i7-7600U, 1TB SSD, 8GB RAM, 14" WQHD IPS (2560x1440) Display, Fingerprint Reader, (Classic Black) : Electronics](https://m.media-amazon.com/images/I/512G6PfxEAL.jpg)
Amazon.com: Lenovo 2018 ThinkPad X1 Carbon (5th Gen) - Windows 7 Pro - Intel Core i7-7600U, 1TB SSD, 8GB RAM, 14" WQHD IPS (2560x1440) Display, Fingerprint Reader, (Classic Black) : Electronics
![Amazon.com : Microsoft Surface Pro 7+ Tablet 12.3 Inch PixelSense Touchscreen Display, Intel Core i5-1135G7 CPU, 8GB RAM, 128GB SSD, Wi-Fi + Bluetooth, Windows 10 Home, Platinum 1XK-00001 (Renewed) : Electronics Amazon.com : Microsoft Surface Pro 7+ Tablet 12.3 Inch PixelSense Touchscreen Display, Intel Core i5-1135G7 CPU, 8GB RAM, 128GB SSD, Wi-Fi + Bluetooth, Windows 10 Home, Platinum 1XK-00001 (Renewed) : Electronics](https://m.media-amazon.com/images/I/71RrAUxzGCL.jpg)
Amazon.com : Microsoft Surface Pro 7+ Tablet 12.3 Inch PixelSense Touchscreen Display, Intel Core i5-1135G7 CPU, 8GB RAM, 128GB SSD, Wi-Fi + Bluetooth, Windows 10 Home, Platinum 1XK-00001 (Renewed) : Electronics
![Dell Optiplex Desktop PC Tower Windows 7 Intel Core 2 Duo Processor 8GB Ram 500GB Hard Drive with DVD -Used Computer - Walmart.com Dell Optiplex Desktop PC Tower Windows 7 Intel Core 2 Duo Processor 8GB Ram 500GB Hard Drive with DVD -Used Computer - Walmart.com](https://i5.walmartimages.com/seo/Dell-Optiplex-Desktop-PC-Tower-Windows-7-Intel-Core-2-Duo-Processor-8GB-Ram-500GB-Hard-Drive-with-DVD-Used-Computer_e7781443-22db-4337-b7cf-bfd3587da5b0.0b703fa486212da21b10d5fcd12b55b1.jpeg?odnHeight=768&odnWidth=768&odnBg=FFFFFF)
Dell Optiplex Desktop PC Tower Windows 7 Intel Core 2 Duo Processor 8GB Ram 500GB Hard Drive with DVD -Used Computer - Walmart.com
![Amazon.com: Lenovo ThinkPad T480s Windows 7 Pro Laptop - Intel Core i5-8250U, 8GB RAM, 1TB SSD, 14" IPS FHD Touch (1920x1080) Display, Fingerprint Reader, Black : Electronics Amazon.com: Lenovo ThinkPad T480s Windows 7 Pro Laptop - Intel Core i5-8250U, 8GB RAM, 1TB SSD, 14" IPS FHD Touch (1920x1080) Display, Fingerprint Reader, Black : Electronics](https://m.media-amazon.com/images/I/61IRRQ2gWPL.jpg)
Amazon.com: Lenovo ThinkPad T480s Windows 7 Pro Laptop - Intel Core i5-8250U, 8GB RAM, 1TB SSD, 14" IPS FHD Touch (1920x1080) Display, Fingerprint Reader, Black : Electronics
![Amazon.com: HP Elitebook 840 G3 Notebook - V1H23UT#ABA (14” FHD Display, i5-6300U 2.4GHz, 8GB RAM, HD Webcam, Windows 7/10 Pro 64) : Electronics Amazon.com: HP Elitebook 840 G3 Notebook - V1H23UT#ABA (14” FHD Display, i5-6300U 2.4GHz, 8GB RAM, HD Webcam, Windows 7/10 Pro 64) : Electronics](https://m.media-amazon.com/images/I/81XOKEM3llL.jpg)
Amazon.com: HP Elitebook 840 G3 Notebook - V1H23UT#ABA (14” FHD Display, i5-6300U 2.4GHz, 8GB RAM, HD Webcam, Windows 7/10 Pro 64) : Electronics
![Amazon.com: Dell Latitude E6510 15.6" Laptop Notebook Windows 7 Pro Core i7-620M 2.66GHz/ 8GB RAM /SOLID STATE 120GB SSD HD DVD-RW +MS OFFICE : Electronics Amazon.com: Dell Latitude E6510 15.6" Laptop Notebook Windows 7 Pro Core i7-620M 2.66GHz/ 8GB RAM /SOLID STATE 120GB SSD HD DVD-RW +MS OFFICE : Electronics](https://m.media-amazon.com/images/I/81cQvYfjZ2L._AC_UF894,1000_QL80_.jpg)
Amazon.com: Dell Latitude E6510 15.6" Laptop Notebook Windows 7 Pro Core i7-620M 2.66GHz/ 8GB RAM /SOLID STATE 120GB SSD HD DVD-RW +MS OFFICE : Electronics
![AMD Athlon II X2 COMPUTER - 8GB RAM, 320GB HD, Windows 7 + Linux - computers - by owner - electronics sale - craigslist AMD Athlon II X2 COMPUTER - 8GB RAM, 320GB HD, Windows 7 + Linux - computers - by owner - electronics sale - craigslist](https://images.craigslist.org/00202_1oBlJ3fgaxd_0x20oM_600x450.jpg)