USB Device Not Recognized - the computer does not detect my phone

At the outset I want to highlight that it is a more complex problem. Namely, after connecting Z1 Compact to the computer displays the message "USB Device Not Recognized". I tried the following things:
-re-soldering charging socket
-checks on various cable and Windows

Hard reset does not help . During flashing the same message pops up. I've had before on other devices similar problems and then helped to change the firmware no but here I do not like to do that. On the data I do not care. Now it's Android 4.4.4. Phone is working normally, you can call, charging and is normally functional. Ultimately, I wanted to try to change soft. What proposals, suggestions?

Phone won't detect the SD Card

I bought an Samsung class 10 16GB SDCard for my phone but it doesen;t detect it. Other phones find the SD card without any problems. Anybody here to help me? (P.S. Yes the SD card is FAT32 formated)

My laptop cant detect my P8 on Fastboot

hi guys

after serverals try ro unlock my code , finally i found a way to unlock it !

so my phone is now unlock and is ready to root !

but here is problem , my laptop witch i do install all drivers ( Huawei driver , hisuite , Universal ADB Driver) cant detect my phone on FASTBOOT and bootloader !

what i must to do ?
THANKS.

Xperia Zr Cant detect sim card

Hello everyone :)

i have a Xperia Zr with locked bootloader

i tried to install alot of stock roms but also with no response still cant get signal but there's a small note

In 4.1.2 rom the mobile shows a notification error : No Service and if i clicked its going to service providers menu that i can see the carriers but i cant register to any of them

in lollipop & 4.3 : the mobile cant detect the sim card & shows an Invalid card in notification

Imei & baseband works well

Is there's any hope ??

Sorry for my language :)

How to play save games data on sdcard so that game can detect it through sd card and

So after so much efforts i could hardly free 1.60gb on my internal memory but still the game's data file is of 2 gb....I have already read about foldermount app but according to it, that app is used to move data file from internal to sd cars and then game can be played, but in my case i dont even have sufficient space to use flodermount...so is there any other way to do this....i have already rooted my phone..:(:rolleyes:

my samsung did not detect sim card

I installed cyanogenmod latest version on my samsung gt i9300 . all were fine but just it null my ime and did not detect sim card . how to solve the problem . i have install it through the instruction of xda senior members who creat this rom fo samsung gt i9300 . please help me. thanks