HP COMPAQ series Presario CQ35 notebook computer, the power adapter makes a "beep" sound after being powered on, but it can't be turned on.

Repair is not recommended because it is not cost-effective, but it is not necessary to match the original power adapter. This requires that the plug specifications are consistent, the output polarity is consistent, the output current is equal to or greater than the original one, and it can be used, so that the price of non-original products is around 60 yuan, and the original price will be doubled.