dead boot due to sp flash tool

I've flash scatter stock rom commin from huawei site i downloaded but it always says error something like dram error. i've flash it for about 2 weeks just using sp flash tool coz they say that thing could only help to fix the problem on it. at first, the problem is only bootloop and when i flash using sp flash tool, boom it goes to deadboot not even the logo of the charging no stock recovery not even vibrating and no power on. nothins happen at all. i use defferent types of cable in ferforming the flash tool i presses volume down or volume up or any other combination just to download the flash tool to the android. i also searched for dram error. its the same it did not fix. i tried removing battery, same thing happens. i tried old sp flash tool also nothings happen i tried also write memory of sp flash tool like what they do at first it downloaded but now not. at first it write the memory and have downloaded the whole thing of file from stock rom from huawei but at the end of flashing there is an error and i cant identify it coz it only happen, i guess only twice and now flash tool cant flash stock rom always saying dram error and others. i guess i deleted my bootloader because i flashed it using download and format on that first time.