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CPU upgrades in laptops are typically not supported, especially when the CPUs in question are a couple years apart by manufacture date. The BIOS would need support for that specific CPU, and I'd bet a month's pay that such a BIOS doesn't exist.

Primary Gaming Rig:

Ryzen 5 5600 CPU, Gigabyte B450 I AORUS PRO WIFI mITX motherboard, PNY XLR8 16GB (2x8GB) DDR4-3200 CL16 RAM, Mushkin PILOT 500GB SSD (boot), Corsair Force 3 480GB SSD (games), XFX RX 5700 8GB GPU, Fractal Design Node 202 HTPC Case, Corsair SF 450 W 80+ Gold SFX PSU, Windows 11 Pro, Dell S2719DGF 27.0" 2560x1440 155 Hz Monitor, Corsair K68 RGB Wired Gaming Keyboard (MX Brown), Logitech G900 CHAOS SPECTRUM Wireless Mouse, Logitech G533 Headset

 

HTPC/Gaming Rig:

Ryzen 7 3700X CPU, ASRock B450M Pro4 mATX Motherboard, ADATA XPG GAMMIX D20 16GB (2x8GB) DDR4-3200 CL16 RAM, Mushkin PILOT 1TB SSD (boot), 2x Seagate BarraCuda 1 TB 3.5" HDD (data), Seagate BarraCuda 4 TB 3.5" HDD (DVR), PowerColor RX VEGA 56 8GB GPU, Fractal Design Node 804 mATX Case, Cooler Master MasterWatt 550 W 80+ Bronze Semi-modular ATX PSU, Silverstone SST-SOB02 Blu-Ray Writer, Windows 11 Pro, Logitech K400 Plus Keyboard, Corsair K63 Lapboard Combo (MX Red w/Blue LED), Logitech G603 Wireless Mouse, Kingston HyperX Cloud Stinger Headset, HAUPPAUGE WinTV-quadHD TV Tuner, Samsung 65RU9000 TV

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Are you sure that your board and chipset support the QX9300? Especially with core 2 generation parts, you typically had a wide array of chipsets running off a single socket, each supporting different processors.

Aside from that, it's possible your BIOS doesn't support the QX9300, in which case you're SOL.

 

What CPU did that PC come with?

AMD Ryzen R7 1700 (3.8ghz) w/ NH-D14, EVGA RTX 2080 XC (stock), 4*4GB DDR4 3000MT/s RAM, Gigabyte AB350-Gaming-3 MB, CX750M PSU, 1.5TB SDD + 7TB HDD, Phanteks enthoo pro case

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1 minute ago, Coaxialgamer said:

Are you sure that your board and chipset support the QX9300? Especially with core 2 generation parts, you typically had a wide array of chipsets running off a single socket, each supporting different processors.

Aside from that, it's possible your BIOS doesn't support the QX9300, in which case you're SOL.

 

What CPU did that PC come with?

Core 2 Duo T6400

GM45 Chipset

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1 minute ago, ILI-BIG said:

Core 2 Duo T6400

GM45 Chipset

The QX9300 is a significantly faster, hotter, and more power hungry chip. It is quite possible that Toshiba didn't add it to the CPU support list because of this, or they may not have bothered adding support for a processor that they didn't offer. Alternatively your CPU might be dead.

Without documentation specific to this laptop it's hard to be sure.

AMD Ryzen R7 1700 (3.8ghz) w/ NH-D14, EVGA RTX 2080 XC (stock), 4*4GB DDR4 3000MT/s RAM, Gigabyte AB350-Gaming-3 MB, CX750M PSU, 1.5TB SDD + 7TB HDD, Phanteks enthoo pro case

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On 2/24/2023 at 8:52 PM, Coaxialgamer said:

The QX9300 is a significantly faster, hotter, and more power hungry chip. It is quite possible that Toshiba didn't add it to the CPU support list because of this, or they may not have bothered adding support for a processor that they didn't offer. Alternatively your CPU might be dead.

Without documentation specific to this laptop it's hard to be sure.

Will X9100 work? QX9300 was fried CPU.

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