Is the CPU incompatible with the graphics card motherboard?
Is memory too low?
Is there a bad track on the hard disk?
Is the power supply insufficient?
Whether the radiator is not running smoothly, etc. , which will lead to the problem of slow response.
There is something wrong with the hardware itself and it needs to be returned.
How to detect used computers?
Get yourself a USB flash drive and download in advance: Master Lu, memtest, CPU-Z, GPU-Z, AIDA64, HD TUNE and other software.
1、CPU
/Model/..... Master Lu can check the CPU model and match it to the agreed model (some people right-click the computer (my computer)-properties, and the data checked here can be changed, so you have to use Master Lu to test it).
/core /...CPU core problem,
Cpus in the market are generally divided into (C= core T= thread) 1C/ 1T, 1C/2T, 2C/2T, 3C/3T, 4C/4T, 4C/8T, 6C/6T and 8C/8T. In the Task Manager,
2. Radiator
/temperature/... there is nothing fake about these dozens of dollars, but it can't be ignored. It involves the mute and heat dissipation of the computer. Although the second-hand configuration does not mention the radiator, you can use AIDA64 pressure test when you receive the computer to see if you can hold down the temperature of the CPU (within 75 degrees).
/Noise/... and see if it's silent. If it looks like a helicopter, you must be uncomfortable using this computer.
3. Motherboard
/Model/... Master Lu tested the model of the motherboard, and whether it is consistent with the agreement in advance.
/Memory Slots/... Then there are 2 or 4 memory slots on the motherboard.
/Interface/... Try all the USB interfaces in the back, and all the video interfaces in the back (if the CPU has a nuclear display) to see if it is broken;
Step 4 remember
/True or False/... Use the SPD option of CPU-Z to see if the manufacturer has a name.
/Fault detection/... It's best to use the U disk system to detect under DOS, or simply start the machine and use the prepared memtest to test.
/Capacity/... Open Task Manager (Ctrl+Alt+Del)- Performance, physical memory, in MB, the total below is 40 12, which is 40 12M, which is 4G memory; The unit can also be KB. Simply calculate the capacity according to 1GB= 1024MB and 1MB= 1024KB. This place can't be fake.
5. Hard disk
/Model/... Master Lu checks the model and capacity.
/health/... check the Smart parameters and use HD TUNE- Health. If you watch the red alarm (except C7), you can't accept it. If the yellow alarm is not accepted (except C7), it is acceptable if it is normal. If there is an error, you can't accept it (not for a few hours, just check the intelligent information).
/Solid-state/... Solid-state hard disk, you don't need to test your health, as long as you have the right model and capacity.
6. Graphics card
/true/false/... you have to measure it with GPU-Z. Although the fake card has changed one or two parameters, it is impossible to change all the parameters of the graphics card. This place needs some common sense. For example, the other party said that the graphics card is GTX650, and this graphics card is 28nm with 384 shader, DDR5. Simply check these parameters on GPU-Z.