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
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HP 15.6" FHD Laptop, Intel Core i5-1135G7, 8GB RAM, 256GB SSD, Windows 11 Home, Natural Silver, 15-dy2095wm - Walmart.com
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